Ink-jet printing method

Abstract

The utility model relates to the technical field of gravure guide roll, and disclose a kind of anti-flying ink gravure guide roll, including roller body, the roller wall of roller body is set to thin-walled shape, the both ends of roller body are provided with bevel cutting ring;Seal disc, multiple guide slots are set on the circumferential array of seal disc;Support mechanism, support mechanism includes with the middle shaft rotationally connected of seal disc, two groups of support rods are slidably connected on the middle shaft, multiple sector plates are hinged on two groups of support rods, multiple sector plates are distributed in the circumferential array in the periphery of middle shaft, the both ends of sector plate are provided with the guide convex of sliding connection with the guide slot on seal disc;The support rod in support mechanism is displaced on the middle shaft, so that sector plate is in contact with / away from the inner wall of roller body;The anti-flying ink gravure guide roll is synergized in multiple aspects through thin-walled design, bevel cutting ring anti-flying ink structure, retractable support mechanism, and multiple technical effects of cost reduction, anti-flying ink, stable printing, convenient maintenance are realized.

Description

Technical Field

[0001] This utility model relates to the field of gravure printing guide roller technology, specifically a gravure printing guide roller that prevents ink splatter. Background Technology

[0002] Ink splattering in gravure printing is a common problem in the printing industry. When the gravure printing rollers rotate at high speed, excess ink on their surface and at both ends splashes onto the printed materials, the gravure printing equipment, and the workshop floor. Currently, the industry practice is to install a baffle between the printed materials and the printing rollers to block the splashed ink and prevent it from landing on the printed materials. However, there is no structure specifically designed for the gravure guide rollers themselves to change the trajectory of the ink splattering at its source, thereby achieving the effect of protecting the printed materials.

[0003] CN216507328U discloses a gravure printing guide roller for preventing ink splatter. Guide structures are provided at both ends of the gravure cylinder. The height difference between the lowest point of the inner ring wall of the guide structure and the end face of the rotating core is consistent with the thickness of the additive layer set on the end face of the rotating core. This allows the ink adhering to the additive layer to be transferred to the guide structure during centrifugation and flung away from the gravure cylinder. However, this technical solution still has the problems of a heavy roller body, high cost of gravure printing guide rollers for a single printed pattern, and cumbersome replacement of gravure printing guide rollers for new patterns at high frequency.

[0004] Therefore, we provide a gravure printing guide roller that prevents ink splatter to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an anti-ink-splash gravure printing guide roller, which features a thin-walled design, an anti-ink-splash structure, and a retractable support mechanism. This solves the problems of heavy roller bodies, high cost of gravure printing guide rollers for individual printing patterns, and cumbersome replacement.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: An anti-ink-splash gravure printing guide roller, comprising: The roller body has a thin-walled wall and beveled rings at both ends. A sealing plate, wherein multiple guide grooves are arranged in a circumferential array on the sealing plate; The support mechanism includes a central shaft rotatably connected to the sealing disc. Two sets of support rods are slidably connected to the central shaft. Multiple sector plates are hinged to the two sets of support rods. The multiple sector plates are arranged in a circumferential array around the central shaft. The two ends of the sector plates are provided with guide protrusions that are slidably connected to guide grooves on the sealing disc. The support rods in the support mechanism are displaced on the central shaft, so that the sector plates abut against / move away from the inner wall of the roller.

[0007] Preferably, two sets of threaded portions are symmetrically arranged on the central axis, each threaded portion is fitted with a threaded disc, and the threaded disc is circumferentially arranged with multiple first hinge rings, the threaded disc being hinged to the support rod through the first hinge rings.

[0008] Preferably, the roller body is provided with a hollow cavity, the axial line of the central axis of the support mechanism coincides with the axial line of the roller body, and the support mechanism is located between the two sealing discs.

[0009] Preferably, the sealing plate is T-shaped, the sealing plate guide groove is open, and the sealing plate has a recessed hole.

[0010] Preferably, the inner wall of the roller body is symmetrically provided with two locking protrusions, the concave hole on the sealing plate cooperates with the locking protrusions of the roller body, the locking protrusions are threaded with locking bolts, and the side wall of the bolt head of the locking bolt abuts against the side wall of the sealing plate.

[0011] Preferably, the diameter of the sealing disc is equal to the diameter of the inner wall of the roller body, the outer wall of the sealing disc is slidably connected to the inner wall of the roller body, the circumferential side end of the sealing disc is connected to the oblique cut ring, and the angle between the side wall of the sealing disc and the inclined surface of the oblique cut ring is not less than 120°.

[0012] Preferably, the angle between the inclined surface of the oblique ring and the extended line of the inner wall of the roller body is not less than 30°.

[0013] Preferably, the central shaft is a multi-stage rotating shaft, the middle section of the central shaft is tapered, the threaded part is located at the first stage of the central shaft, the second stage of the central shaft is a connecting part, the sealing plate is provided with a hollow connecting shaft, and the connecting part of the central shaft and the hollow connecting shaft are slidably connected by a sealed bearing.

[0014] Preferably, there is a gap between the outer wall of the connecting part and the inner wall of the hollow connecting shaft.

[0015] Preferably, two second hinge rings are symmetrically arranged on the sector plate, and the sector plate is hinged to the support rod through the second hinge rings.

[0016] (III) Beneficial Effects Compared with the prior art, this utility model provides a gravure printing guide roller that prevents ink splatter, which has the following beneficial effects: 1. This anti-ink-splatter gravure printing guide roller features a thin-walled design, which reduces the amount of raw materials required for manufacturing compared to traditional thick-walled gravure printing guide rollers, directly lowering the production cost per roller. Furthermore, traditional thick-walled gravure printing guide rollers are heavy, resulting in high replacement costs when changing printing patterns and significant losses from idle or scrapped rollers. This thin-walled roller, however, allows for more flexible replacement based on printing needs, greatly reducing the high costs associated with idle or scrapped rollers due to pattern updates and improving the economic efficiency of equipment use.

[0017] Precisely guide the direction of ink splatter to ensure printing quality. 2. This anti-ink-splashing gravure printing guide roller has beveled rings at both ends of the roller body that fit with the sealing plate at a specific angle. The fit between the side wall of the sealing plate and the inclined surface of the beveled ring ensures that when the ink on the side wall of the sealing plate moves outward under the action of centrifugal force, it will smoothly climb up the side wall of the sealing plate to the annular cut surface of the beveled ring. Finally, it will be flung away at the highest point of the cut surface. Guided by the inclination of the cut surface, the ink will fly outward along the axis of the roller body at an angle, avoiding the printing surface of the roller body. This fundamentally avoids the problem of ink-splashing contamination of the printing surface and ensures the quality of the printed product.

[0018] 3. The anti-spray gravure printing guide roller has a support mechanism that allows the fan-shaped plate to unfold and retract through the rotation of the central shaft. When the central shaft is rotated in the forward direction, the threaded disc drives the support rod to unfold, causing the fan-shaped plate to contact the inner wall of the roller body, providing reliable support for the thin-walled roller body. This design makes up for the lack of rigidity of the thin-walled roller body itself, preventing it from deforming due to force during high-speed printing, ensuring the stability of the roller body during printing, and thus ensuring uniform printing pressure, accurate pattern reproduction, and maintaining a high-quality printing operation. The fan-shaped plate can be recovered by rotating the central shaft in the opposite direction, which easily separates and disassembles the support mechanism and the roller, greatly simplifies the roller replacement process and improves the efficiency of equipment maintenance and pattern updates. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is the first exploded view of this utility model.

[0021] Figure 3 This is the second exploded view of this utility model.

[0022] Figure 4 This is a schematic diagram of the sealing disc structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the support mechanism structure of this utility model.

[0024] Figure 6 This is a schematic diagram showing the cooperation between the support mechanism and the roller body of this utility model.

[0025] Figure 7 This is the first sectional view of the present invention.

[0026] Figure 8 This is a second sectional view of the present invention.

[0027] Figure 9 for Figure 8 A schematic diagram of a local part of the structure.

[0028] In the picture: 1. Roller body; 101. Hollow cavity; 102. Beveled ring; 103. Engraving; 2. Sealing plate; 201. Guide groove; 202. Hollow connecting shaft; 203. Concave hole; 3. Central shaft; 301. Connecting part; 302. Threaded part; 304. Threaded disc; 305. First hinge ring; 306. Sector plate; 3061. Guide protrusion; 307. Support rod; 4. Locking bolt; 5. Gap. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] This embodiment provides a gravure printing guide roller that prevents ink splatter, and has the following technical features.

[0034] Please see Figures 1 to 9 A gravure printing guide roller for preventing ink splatter includes a roller body 1 with a thin-walled roller wall and beveled rings 102 at both ends. The diameter of a sealing plate 2 is equal to the diameter of the inner wall of the roller body 1. The outer wall of the sealing plate 2 is slidably connected to the inner wall of the roller body 1. The circumferential side of the sealing plate 2 is connected to the beveled rings 102. The angle between the side wall of the sealing plate 2 and the inclined surface of the beveled ring 102 is not less than 120°, and the angle between the inclined surface of the beveled ring 102 and the extended line of the inner wall of the roller body 1 is not less than 30°. This angle design ensures that the ink can smoothly climb to the cut surface of the beveled ring 102 under the action of centrifugal force, and avoids ink stagnation at the junction of the sealing plate 2 and the beveled ring 102.

[0035] It should be noted that the gravure guide roller 1 in this technical solution adopts a thin-walled design. Compared with the traditional thick-walled design, the production cost of a single gravure guide roller 1 is lower, avoiding the problem of high idle and scrap costs caused by the high frequency of replacement of new printing patterns with traditional heavy gravure guide rollers. Through the set oblique ring 102, when the ink on the side wall of the sealing plate 2 moves outward under the action of centrifugal force, it can smoothly climb onto the annular cut surface of the oblique ring 102 from the side wall of the sealing plate 2, and be flung away at the highest ring line position of the annular cut surface. Affected by the inclination of the oblique surface of the annular cut surface, when the ink is flung away, its splash direction is obliquely flying outward along the axis of the roller 1, and will not fall on the printing surface of the roller 1, thereby achieving the effect of ensuring printing quality.

[0036] See Figures 2 to 9 The roller body 1 is provided with a hollow cavity 101. The axial line of the central shaft 3 of the support mechanism coincides with the axial line of the roller body 1. The support mechanism is located between two sealing discs 2. The sealing discs 2 are T-shaped. The guide groove 201 of the sealing discs 2 is open. The sealing discs 2 are provided with concave holes 203. The inner wall of the roller body 1 is symmetrically provided with two locking protrusions 103. The concave holes 203 on the sealing discs 2 cooperate with the locking protrusions 103 on the roller body 1. The locking protrusions 103 are threaded with locking bolts 4. The side wall of the bolt head of the locking bolt 4 abuts against the side wall of the sealing disc 2. The sealing plate 2 has multiple guide grooves 201 arranged in a circular array on its surface; the support mechanism includes a central shaft 3 rotatably connected to the sealing plate 2, two sets of support rods 307 slidably connected to the central shaft 3, and multiple sector plates 306 hinged to the two sets of support rods 307. The multiple sector plates 306 are arranged in a circular array around the central shaft 3, and the two ends of the sector plates 306 are provided with guide protrusions 3061 that are slidably connected to the guide grooves 201 on the sealing plate 2; the support rods 307 in the support mechanism are arranged in a circular array around the central shaft 3. The shaft 3 is displaced so that the sector plate 306 contacts / moves away from the inner wall of the roller body 1. Two sets of threaded parts 302 are symmetrically arranged on the central shaft 3. The threaded parts 302 are fitted with threaded discs 304. Multiple first hinge rings 305 are arranged in a circumferential array on the threaded discs 304. The threaded discs 304 are hinged to the support rods 307 through the first hinge rings 305. Two second hinge rings are symmetrically arranged on the sector plate 306. The sector plate 306 is hinged to the support rods 307 through the second hinge rings.

[0037] It should be noted that: the guide protrusion 3061 is designed to allow the support rod 307 to move along the groove of the guide groove 201, preventing positional deviation in the radial direction of the sealing disc 2; and to limit the sector plate 306 in the circumferential direction of the sealing disc 2, thus preventing the support rod 307 and the threaded disc 304 from rotating circumferentially with the central shaft 3, facilitating the unfolding and retraction of the support rod 307; the support mechanism on the sealing disc 2 slides into the roller body 1, so that the concave hole 203 of the sealing disc 2 engages with the locking protrusion 103 of the roller body 1 and is limited by the locking bolt 4; through external The clamping and fixing device locks the hollow connecting shaft 202 to keep the roller body 1 stationary. Then, the central shaft 3 is rotated forward through the external hexagonal mating head. The central shaft 3 drives the threaded disc 304 to move away from the sealing disc 2 through the threaded part 302. The support rod 307 unfolds on the central shaft 3, so that the fan-shaped plate 306 abuts against the inner wall of the roller body 1 to achieve the support effect, effectively supporting and strengthening the thin-walled roller body 1 and ensuring the quality of printing work. Conversely, rotating the central shaft 3 in the opposite direction can achieve the effect of retracting the fan-shaped plate 306, which facilitates the separation and disassembly of the support mechanism from the roller body 1, thereby making it easy to replace the new gravure guide roller.

[0038] See Figure 3 and Figures 7 to 9 The central shaft 3 is a multi-stage rotating shaft. The middle section of the central shaft 3 is tapered. The threaded part 302 is set in the first stage of the central shaft 3. The second stage of the central shaft 3 is set as the connecting part 301. The sealing plate 2 is provided with a hollow connecting shaft 202. The connecting part 301 of the central shaft 3 and the hollow connecting shaft 202 are slidably connected by a sealed bearing. There is a gap 5 between the outer wall of the connecting part 301 and the inner wall of the hollow connecting shaft 202.

[0039] It should be noted that the central shaft 3 is tapered in the middle section, which not only reduces the overall weight of the central shaft 3, but also limits the expansion range of the two sets of support rods 307, preventing interference when the two sets of components move. A gap 5 is reserved between the connecting part 301 of the central shaft 3 and the hollow connecting shaft 202 of the sealing plate 2. This gap 5 can effectively prevent friction between the two during relative sliding. This setting can prevent unnecessary additional rotation of the central shaft 3 caused by sliding friction, ensuring the controllability and stability of the central shaft 3 during rotation, thereby ensuring that the expansion and retraction of the support mechanism are precise and controllable, and providing a guarantee for the stable operation of the entire gravure printing guide roller.

[0040] Working principle: After the sealing disc 2 and the support mechanism are installed with the roller body 1, the circumferential side of the sealing disc 2 is connected to the oblique cutting ring 102. When the ink on the side wall of the sealing disc 2 moves outward under the action of centrifugal force, it can smoothly climb up the annular cut surface of the oblique cutting ring 102 from the side wall of the sealing disc 2 and be flung away at the highest ring line position of the annular cut surface. Affected by the inclination of the oblique surface of the annular cut surface, when the ink is flung away, its splashing direction is obliquely flying outward along the axis of the roller body 1, and it will not fall on the printing surface of the roller body 1, thereby achieving the effect of ensuring printing quality.

[0041] The hollow connecting shaft 202 is locked by an external clamping and fixing device to keep the roller body 1 stationary. Then, the central shaft 3 is rotated in the forward direction by an external hexagonal mating head. The central shaft 3 drives the threaded disc 304 to move away from the sealing disc 2 through the threaded part 302. The support rod 307 unfolds on the central shaft 3, so that the fan-shaped plate 306 abuts against the inner wall of the roller body 1 to achieve a supporting effect, effectively supporting and strengthening the thin-walled roller body 1 and ensuring the quality of printing work. Conversely, rotating the central shaft 3 in the opposite direction can achieve the effect of retracting the fan-shaped plate 306, which facilitates the separation and disassembly of the support mechanism from the roller body 1, thereby making it easy to replace the new gravure guide roller.

[0042] In summary, this anti-ink-splash gravure printing guide roller achieves multiple technical benefits, including cost reduction, ink-splash prevention, stable printing, and easy maintenance, through the synergistic effect of thin-wall design, oblique-cut ring 102 anti-ink-splash structure, telescopic support mechanism, and optimized gap 5.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fountain roller for intaglio printing, characterized in that include: Roller body (1), the roller wall of the roller body (1) is configured as thin-walled, and oblique cut rings (102) are provided at both ends of the roller body (1). The sealing plate (2) has multiple guide grooves (201) arranged in a circular array on the sealing plate (2). The support mechanism includes a central shaft (3) rotatably connected to the sealing disc (2). Two sets of support rods (307) are slidably connected to the central shaft (3). Multiple sector plates (306) are hinged to the two sets of support rods (307). The multiple sector plates (306) are arranged in a circumferential array around the central shaft (3). The two ends of the sector plates (306) are provided with guide protrusions (3061) slidably connected to the guide grooves (201) on the sealing disc (2). The support rods (307) in the support mechanism are displaced on the central shaft (3) so that the sector plates (306) abut against / move away from the inner wall of the roller body (1).

2. The fountain roller according to claim 1, wherein Two sets of threaded parts (302) are symmetrically arranged on the central shaft (3). The threaded parts (302) are fitted with threaded discs (304). Multiple first hinge rings (305) are arranged in a circumferential array on the threaded discs (304). The threaded discs (304) are hinged to the support rods (307) through the first hinge rings (305).

3. The fountain roller according to claim 1, wherein The roller body (1) is provided with a hollow cavity (101), the axial line of the central shaft (3) of the support mechanism coincides with the axial line of the roller body (1), and the support mechanism is located between two sealing discs (2).

4. The fountain roller according to claim 1, wherein The sealing plate (2) is T-shaped, the guide groove (201) of the sealing plate (2) is open, and the sealing plate (2) is provided with a concave hole (203).

5. A fountain roller according to claim 4, wherein The inner wall of the roller body (1) is symmetrically provided with two locking protrusions (103). The concave hole (203) on the sealing plate (2) cooperates with the locking protrusions (103) of the roller body (1). A locking bolt (4) is threaded on the locking protrusions (103). The bolt head sidewall of the locking bolt (4) abuts against the sidewall of the sealing plate (2).

6. The ink-jet fly prevention gravure guide roll according to claim 1, wherein The diameter of the sealing disc (2) is equal to the diameter of the inner wall of the roller body (1). The outer wall of the sealing disc (2) is slidably connected to the inner wall of the roller body (1). The circumferential side end of the sealing disc (2) is connected to the oblique cutting ring (102). The angle between the side wall of the sealing disc (2) and the inclined surface of the oblique cutting ring (102) is not less than 120°.

7. An ink-jet fly prevention concave guide roller according to claim 6, wherein The angle between the inclined surface of the oblique ring (102) and the extended line of the inner wall of the roller (1) is not less than 30°.

8. The fountain roller according to claim 2, wherein The central shaft (3) is a multi-stage rotating shaft. The middle section of the central shaft (3) is tapered. The threaded part (302) is located on the first stage of the central shaft (3). The second stage of the central shaft (3) is set as the connecting part (301). The sealing plate (2) is provided with a hollow connecting shaft (202). The connecting part (301) of the central shaft (3) and the hollow connecting shaft (202) are slidably connected by a sealed bearing.

9. An ink-jet fly prevention concave guide roller according to claim 8, wherein There is a gap (5) between the outer wall of the connecting part (301) and the inner wall of the hollow connecting shaft (202).

10. The fountain roller according to claim 1, wherein Two second hinging rings are symmetrically arranged on the sector plate (306), and the sector plate (306) is hinged with the supporting rod (307) through the second hinging rings.

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